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Multi-spectral light sensor

A technology of photoelectric devices and light-shielding materials, applied in the field of multi-spectral light sensors, can solve the problems of high cost and high cost

Pending Publication Date: 2020-12-15
VISHAY INTERTECHNOLOGY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Colorimeters commonly used in this field can be costly
Its cost can start in the hundreds of dollars and run into the thousands, and in some cases it can be prohibitive

Method used

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Examples

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Embodiment Construction

[0046] According to aspects of the present disclosure, a detector array is provided for measuring a characteristic of light. The detector array may include a photodiode array, and a filter array disposed over the photodiode array. The photodiode array may include a plurality of photodiodes. The filter array may include a plurality of bandpass filters. Each bandpass filter can be positioned over a different photodiode. In addition, each bandpass filter may have a different passband than the others, thereby enabling an underlying photodiode to measure the energy of the light in the filter's passband. When the signals generated by the photodiodes in the detector array are combined, energy measurements for the entire spectrum of interest can be obtained. The spectrum of interest may encompass one or more of the visible, IR, and / or UV bands.

[0047] According to aspects of the present disclosure, there is provided an optoelectronic device comprising the detector array and a si...

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Abstract

An optoelectronic device is disclosed, comprising: a photodiode array including a plurality of first photodiodes, each first photodiode including a respective n+ region and a respective n-well region;a guide array disposed over the photodiode array, the guide array including a plurality of guide members separated from one another by a layer of light-blocking material, the guide members being aligned with the n+ regions of the first photodiodes, such that each guide member is disposed over a different respective n+ region, and the layer of light-blocking material being aligned with the n-wellregions of the first photodiodes; and a filter array disposed over the guide array, the filter array including a plurality of bandpass filters, each bandpass filter being aligned with a different oneof the plurality of guide members, each bandpass filter having a different transmission band.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Patent Application Serial No. 15 / 941,855 filed March 30, 2018, the contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates generally to light sensing devices, and more particularly to multispectral light sensors. Background technique [0004] Measuring color is an important part of evaluating the operation of various electronic devices, such as printing devices and display devices. Furthermore, measuring color is an important part of evaluating the performance of various light sources such as light emitting diodes (LEDs), fluorescent lights, halogen lights, infrared (IR) light sources, and ultraviolet (UV) light sources. Colorimeters commonly used in this field can have high costs. Its cost can start in the hundreds of dollars and run into the thousands, and in some cases it can be prohibitive. Therefore, there is a nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0216H01L31/101H01L27/144G01J3/02G01J3/28G01J3/26H04N23/12
CPCG01J3/2803G01J2003/2806H01L27/1446H01L31/02164H01L31/02165G01J2003/2826G01J3/0259G01J3/0262G01J3/26H01L31/1013G01J3/0229
Inventor K-W·曾Y-M·林
Owner VISHAY INTERTECHNOLOGY INC
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